Argentina's Juan Ignacio Chela, top, returns the ball to Kazakhstan's Yuriy Schukin and Evgeny Korolev, unseen, as his teammate Eduardo Shwank looks on during a Davis Cup world group quarterfinals ... more

Argentina's Juan Ignacio Chela, top, returns the ball to Kazakhstan's Yuriy Schukin and Evgeny Korolev, unseen, as his teammate Eduardo Shwank looks on during a Davis Cup world group quarterfinals doubles tennis game in Buenos Aires, Argentina, Friday July 8, 2011. (AP Photo/Jorge Saenz) less